The president also mentioned that he will not label China a currency manipulator. This will weigh on Asian equity market's sentiment.
United States futures pointed to a slightly lower open on Wall Street too.
A U.S. Treasury spokesman could not immediately be reached for comment on Trump's comments and on the currency report.
"China is killing us", Trump had complained on the campaign trail. "Following his comments, Treasury yields fell to their lowest this year".
The dollar index, which tracks the greenback against a basket of six trade-weighted peers, was up 0.5 percent, after a 0.6 percent decline on Wednesday marked its biggest one-day fall in three weeks.
The dollar hit its highest level in over a decade in December, a sign that investors are betting on the prospects of a stronger U.S. economy compared to other parts of the world. The greenback fell below 110 yen for the first time since mid-November.
Most financial markets are closed on Friday for the Good Friday holiday, and trading volumes on Thursday have been much lighter than usual.
The yield on US 10-year Treasury notes recorded its steepest single-week decline since early 2016 due to demand for longer-dated government bonds spurred by worries over potential USA military strikes against Syria and North Korea.
With investors viewing South Korea's sovereign notes as a riskier bet on the rising tensions, the premium for the country's credit default swap debt insurance has risen to a nine-month high.
European stocks were lower on Thursday.
BEIJING (AP) - Global stock markets were mostly lower Thursday after President Donald Trump withdrew a threat to declare China a currency manipulator and said the dollar was "getting too strong".
US President Donald Trump backtracked on Wednesday and said China is not manipulating its currency to gain a trade advantage.
The Dow dropped 0.3%, the Nasdaq Composite slid half a percent and the S&P 500 eased 0.4%.
CHINA TRADE: China's export growth accelerated in March in a positive sign for global demand while import growth cooled.
The dollar dipped to an early low of $1.0677 against the Euro Thursday, but has since climbed to around $1.0615.
A recent surge in support for far-left euroskeptic candidate Jean-Luc Melenchon has increased concerns the election will become a run-off between him and far-right, also euroskeptic, National Front leader Marine Le Pen.
"I think it's wonderful that they abstained", Trump said.
The dollar began rising in value in mid-2014, a trend that has exerted a drag on US exports.
ENERGY: Benchmark U.S. crude sank 9 cents to $53.02 per barrel in electronic trading on the New York Mercantile Exchange. US crude ended up 0.13 percent at $53.18 a barrel, while global benchmark Brent settled up 0.05 percent at $55.89. The precious metal was steady at $1,287.90 an ounce, after earlier hitting its highest level in five months.